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8 records – page 1 of 1.

Ambient Vibration Measurement Data of a Four-Story Mass Timber Building

https://research.thinkwood.com/en/permalink/catalogue2211
Year of Publication
2019
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Author
Mugabo, Ignace
Barbosa, André
Riggio, Mariapaola
Batti, James
Publisher
Frontiers Media
Year of Publication
2019
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Acoustics and Vibration
Keywords
Albina Yard
Ambient Vibration Testing
Operational Modal Analysis
Language
English
Research Status
Complete
Series
Frontiers in Built Environment
ISSN
2297-3362
Online Access
Free
Resource Link
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Composite CLT-Glulam Double-T Panels

https://research.thinkwood.com/en/permalink/catalogue2645
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Roofs
Organization
Fast + Epp
University of Northern British Columbia
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Roofs
Topic
Mechanical Properties
Connections
Keywords
Vibration
Stiffness Properties
Strength
Screw
Vibration Test
Monotonic Loading Tests
GCWood
Research Status
In Progress
Summary
To support the associated Sir Matthew Begbie Elementary School and Bayview Elementary School projects in pushing the boundaries forward for long-span floor and roof construction, this testing project aims to compare different connection approaches for composite connections between glulam and cross-laminated timber (CLT) – for vibration, stiffness, and strength. Working with the University of Northern British Columbia (UNBC), Fast + Epp aimed to complete a series of vibration and monotonic load tests on 30’ long full-scale double-T ribbed panels. The tests consisted of screws in withdrawal, screws in shear, and nominal screws clamping with glue. Both the strength and stiffness are of interest, including slip stiffness of each connection type. This physical testing was completed in January and February 2020, where the full composite strength of each system was reached. Initial data analysis has provided information for comparison with existing models for shear connection stiffness. Publications will follow in 2021.
Resource Link
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Dynamical Properties of a Large Glulam Truss for a Tall Timber Building

https://research.thinkwood.com/en/permalink/catalogue2036
Year of Publication
2018
Topic
Wind
Mechanical Properties
Connections
Material
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Trusses

Evaluation of Dynamic Performance of Glulam Frame Structure Composed of Slotted Bolted Connection System

https://research.thinkwood.com/en/permalink/catalogue503
Year of Publication
2014
Topic
Connections
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Author
Komatsu, Kohei
Mori, Takuro
Kitamori, Akihisa
Araki, Yasuhiro
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Frames
Topic
Connections
Mechanical Properties
Keywords
Slotted Bolted Connection
Vibration Test
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
Earthquake-resisting performance of glulam frame structure was evaluated by shaking table tests on a specially designed glulam “double cross shape” specimen composed of slotted bolted connection (SBC) system. By the first vibration test using sinusoidal wave, the specimen survived until 80% level of input waves without damage. After renewing SBC system, the second vibration test was done on a same specimen using the JMA-Kobe NS waves having a maximum acceleration of 816gal. The specimen survived until 100% level of input without damage but failed by the panel-shear when 120% level was inputted. Earthquake-resisting performance of glulam moment-resisting joints composed of SBC system was considered as satisfactory enough for ductile joint system, but improvement of panelshear of glulam member itself was recognized as a future research need.
Online Access
Free
Resource Link
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Feasibility of Predictive Assessment of Bending Performance of CLT Plates of Canadian Hemlock

https://research.thinkwood.com/en/permalink/catalogue2107
Year of Publication
2019
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls

In-Situ Testing of the Wood Innovation and Design Centre for Serviceability Performance

https://research.thinkwood.com/en/permalink/catalogue1183
Year of Publication
2018
Topic
Serviceability
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Hu, Lin
Cuerrier-Auclair, Samuel
Organization
FPInnovations
Year of Publication
2018
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Serviceability
Acoustics and Vibration
Keywords
Vibration Performance
Sound Insulation
Natural Frequencies
Damping Ratios
Ambient Vibration Testing
Apparent Sound Transmission Class
Apparent Impact Insulation Class
Language
English
Research Status
Complete
Summary
Three performance attributes of a building for serviceability performance are 1) vibration of the whole building structure, 2) vibration of the floor system, typically in regards to motions in a localized area within the entire floor plate, and 3) sound insulation performance of the wall and floor assemblies. Serviceability performance of a building is important as it affects the comfort of its occupants and the functionality of sensitive equipment as well. Many physical factors influence these performances. Designers use various parameters to account for them in their designs and different criteria to manage these performances. The overall objectives of this stud were threefold: 1. The vibration performance tests were to experimentally determine the dynamic properties, e.g., natural frequencies (periods) and damping ratios of the WIDC building through ambient vibration testing on: o the bare structure in 2014, o the finished building upon completion of the construction with occupants in 2015, and o the finished building after 3 years of service in 2017. 2. The floor vibration tests were to evaluate vibration performance of the innovative CLT floor based on the bare floor fundamental natural frequency, 1 kN static deflection, and subjective evaluation. 3. The sound transmission tests were to determine the Apparent Sound Transmision Class (ASTC) and Apparent Impact Insulation Class (AIIC) of selected innovative CLT floor assemblies.
Online Access
Free
Resource Link
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Strength, Stiffness, and Stability of Solid Continua: Gravity Loading Scenario on Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2294
Year of Publication
2019
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems

Water in Mass Timber

https://research.thinkwood.com/en/permalink/catalogue2318
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Organization
TallWood Design Institute
Oregon State University
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Moisture
Keywords
Vibration Testing
Non-Destructive Testing
Biodegradation
Structural Performance
Aesthetic Properties
Cracks
Delamination
Funghi
Insects
CAT-Scan Imaging
Research Status
In Progress
Notes
Project contact is Arijit Sinha at Oregon State University
Summary
This project will undertake a comprehensive analysis of the effects of water exposure, in various forms, on mass timber building elements. Water intrusion is mostly commonly seen during construction, but can also occur during failure of roofs or external facades or as a result of internal plumbing failures. The research team will employ CAT-scan imaging, vibrational testing, non-destructive and small-scale physical tests to assess the effects of moisture intrusion and any subsequent biodegradation on the structural performance and aesthetic characteristics of the building elements and connections. This analysis will include investigating the effects of cracking and delamination that may occur as a result of wetting and drying. The project will facilitate development of guidelines on moisture control during construction, help identify suitable methods for protecting mass timber products where required and highlight design features that can be used to mitigate the risk of fungal and insect attack.
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8 records – page 1 of 1.